#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
using namespace std;

class A{
  public:
	~A() { cout<< "~A()"; }
};
class B{
  public:
	virtual ~B() { cout<< "~B()"; }
};
class C:public A,public B{
  public:
	~C() { cout << "~C()"; }
};
int main()
{
	C * c= new C;
	B * b1= dynamic_cast<B *>(c);
	A * a2= dynamic_cast<A *>(b1);
	delete a2;
}